What is the value of x in the triangle shown?

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?